Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecbaea16f9a29596…

MALICIOUS

PDF

79.2 KB Created: 2021-05-06 18:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5920f3b405b81b2529cb7b09be6963c3 SHA-1: 187c8b869c86975d17c8a502b78342dc3b7d9cfa SHA-256: ecbaea16f9a295962bd682fb10b422cb6c9141ceddbe38ccc1fb23a0fe7907c3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan payload. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The primary malicious URL identified is https://ponafet.ru/strik?utm_term=who+is+prince+eric+in+the+little+mermaid+live+action, which is likely used to host or redirect to the final malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/strik?utm_term=who+is+prince+eric+in+the+little+mermaid+live+action PDF link annotation
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/ef16e.pdfIn PDF document text
    • https://buxexuwuf.weebly.com/uploads/1/3/4/6/134660927/a91fc5bd58.pdfIn PDF document text
    • http://allwoman.site/galaludenadozefowizaduzon13fmg.pdfIn PDF document text
    • https://bejixetixozivi.weebly.com/uploads/1/3/4/4/134499198/widefuruvejaren_kebufupimemaxuk_jiwodigejuzo_sunamexib.pdfIn PDF document text
    • https://woxazalaxit.weebly.com/uploads/1/3/4/2/134235403/mupebopejozesabew.pdfIn PDF document text
    • https://zitilegog.weebly.com/uploads/1/3/4/5/134501444/midatusudowadubor.pdfIn PDF document text
    • http://yachts-4-sale.com/rowirugelawejekyjqgb.pdfIn PDF document text
    • https://padukasafif.weebly.com/uploads/1/3/4/4/134404544/kuvuwuzipa.pdfIn PDF document text
    • https://rodazikajoreme.weebly.com/uploads/1/3/0/8/130874285/litupepovo.pdfIn PDF document text
    • https://dowusasetitemej.weebly.com/uploads/1/3/4/3/134307927/121555.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_8513cf43800a4132b450622817205c9f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/viwumagu.pdfIn PDF document text
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_3dbc38dba413489d9b6175ac85135abc.pdf?index=trueIn PDF document text
    • https://b64dd490-e5b9-492f-89ff-e398ecee904c.filesusr.com/ugd/5926b4_3f01129b4cd74bd4b4d6f68cd9b869e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/how_to_learn_alphabet_sounds.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/dejafusaladuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/agmark_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/financial_mathematics_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/lamuxegiduzanolasan.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/zorelen.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/2014_toyota_camry_front_seat_covers.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/89179816031.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E4 5388 bytes
SHA-256: ca1439960e42e4aa8ce581ef719556d3ad8500aafb80e7d0bcf10f3bffae634d
font_01_sfnt_off00010719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10719 11248 bytes
SHA-256: 3876c33f943931ebd8330f143430312c0be0699751f82cae54cdebb93f678b0b

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